.login-body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 10%, rgba(37, 99, 235, 0.12), transparent 55%),
        radial-gradient(ellipse 70% 50% at 90% 80%, rgba(14, 165, 233, 0.1), transparent 50%),
        #f3f6fb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.login-main {
    width: 100%;
    padding: 24px;
}

.login-card {
    max-width: 400px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 36px 32px 28px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
}

.login-brand h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: #111827;
}

.login-brand p {
    margin: 8px 0 0;
    color: #6b7280;
    font-size: 14px;
}

.login-form {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.login-label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: #374151;
}

.login-label input {
    height: 42px;
    padding: 0 12px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 15px;
}

.login-label input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.login-submit {
    width: 100%;
    height: 42px;
    margin-top: 4px;
    border: none;
    border-radius: 4px;
    background: #2563eb;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.login-submit:hover {
    background: #1d4ed8;
}

.login-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
    border-radius: 4px;
    padding: 10px 12px;
    font-size: 13px;
}

.login-hint {
    margin: 18px 0 0;
    font-size: 12px;
    color: #9ca3af;
    text-align: center;
}

.login-hint code {
    background: #f3f4f6;
    padding: 1px 5px;
    border-radius: 3px;
    color: #4b5563;
}

.login-back {
    margin: 12px 0 0;
    text-align: center;
    font-size: 13px;
}

.login-back a {
    color: #2563eb;
    text-decoration: none;
}

.login-back a:hover {
    text-decoration: underline;
}